David maechant



(No Model.) 2" Sheets- Sheet 1.

1). MAROHANT. FEED REGULATOR FOR CRUSHING MACHINES. No. 369,117. Patented Aug; 30, 1887.

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2 Sheets-Sheet 2.-

(No Model.)

D. MARGHANT. FEED REGULATOR FOR CRUSHING MACHINES. No. 369,117. Patented Aug. 30, 1887.

E 05/ W I v Q I F/ o 4 4 a I j Svwemtoz 6 0601 k go g fifw' afqy W 3g, a um-m s 6 ig W N. PETERS. Pholo-Lilhographnr. Washington, n. cy

UNITED STATES PATENT Orricm.

DAVID MAROHANT, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO JOHN DOLESE AND JASON H. SHEPARD, OF SAME PLACE.

FEED-REGULATOR FOR CRUSHlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 369,117, dated August 30, 1887.

Application filed October 27, 1886. Serial No. 217,311. (No model.)

To all whom it may concern.-

Be it known that I, DAVID MARoHANT,a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Feed-Regulators for Crushing-Machines; and I. do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a mechanism for aiding or increasing the speed of the automatic gravitating feed-supply of rock, stone, or ore from a hopper into a breaking or crushing machine, and it is specially intended for gyratory rock or stone breakers and ore-crushers of the class illustrated in Letters Patent No. 243,545; and my invention consists in certain constructions and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a portion of a gyratorycrusher and hopper with my invention applied thereto, the crusher being'shown partly in elevation and partly ill section, the hopper fully in section, the features of my invention mostly in elevation, and such portions as would tend to hide more important parts broken away. Fig. 2 is a top view of the same. Fig. 3 is a perspective view of the improved platform or frame, and Figs. 4. and 5 are views showing modified forms of the frames or platforms in cross-section.

The letter A in the drawings represents a gyratory stone crusher, for which class of crushers my invention, as before mentioned, is peculiarly adapted, owing to the very great speed at which such crushers are operated.

B is a conical hopper. C is an agitating sliding platform or frame, and D a mechanism for moving the same upward and outward, as will be shown.

The crusher, (provided with the hopper,) when set up and ready for use at the quarry- 1 Works, is located in the usual way in respect to the dumping-platform, which is either on a level with the top portion of 'the hopper when the stone is supplied by means of wagons, or

5o at a suitable distance above said top portion when the supply is furnished in railway-ears.

The platform or frame Omay consist of two longitudinal bars, 0, having cross-bars 0, provided at suitable distances, and may have an angularly turned-up or hooking portion, 0, and may be strengthened by two angular bars, 0 fastened to the under sides of the framebars c, and the turned-up ends of the bars a" facing the center of the crusher. The outer end portion of the platform or frame 0 is provided with a draft-rod, c, by means of which it is moved, as will be apparent. A rope or chain, E, is fastened to an eye, 0 at the end of the rod 0*, which rope or chain passes over two pulleys, e c, and has a weight, E, suspended at its end. The pulleys e e are suitably hung to the frame-work of the dumpingplatform above mentioned, and the pulley e is set back of the eye c of the slide 0, or between it and the center of the crusher, so that the weight E tends to force the platform or frame toward the center of the crusher. Another cord, F, is fastened to the eye 0 and runs over a guide-pulley,f, and to a drum, G, of the mechanism D, by which drum it is slowly wound up, as will be apparent.

The drum G is properly hung in an auxiliary frame, 9, or otherwise, and is provided with a cog-Wheel, 9, Fig. 2, which is revolved by a pinion, 9 connected with a pulley, g, on the said frame 9. The pulley g is revolved by means of a belt, 9, which receives its motion from a small pulley, a, on the countershaft a of the crusher A. By this construction the drum G and platform or frame 0 receive a very slow motion, and thus the platform or frame is moved fully up to the outer or upper rim of the hopper during one feeding period.

When nearly all or all of the stone has been discharged into the crusher below, the frame or platform will have arrived at the termination of its upward and outward movement. If any portion of stone is still on the platform or frame, it may be discharged by turning the platform edgewise by hand. As soon as the frame or platform has completed its aforesaid movement, the belt is thrown off by hand the pulley g and thereupon the weight E pulls the frame or platform 0 down toward the upper central bearing, 0. of the crusher. In doing this the weight E sets the drum G, the wheels gg and pulley g in motion, thereby stop the motion of the platform or frame G,

and thereby prevent a concussion between it and the bearing (L A fresh supply of stone is then dumped into the hopper, the belt is again thrown over the pulleys g and a, and the platform or frame Qis again set in motion.

- While the platform or frame slowly passes through the stones heaped above it, and while the stones are constantly passing down right and left into the crusher, the formation of bridges over the apertures a by the slowlysinking stones is prevented, inasmuch as the hook or upright portion 0 is continually making its way in a central direction through the place at which such bridges would form, and is thus continually displacing the keystones of such bridge formations, and thereby keeping the surrounding stones disconnected and free to drop down into the crusher.

The stone-crushers of this class have generally a plurality of-or commonly threeapertures or feed-openings, a around the upper center bearing, a, and for eachapertnre a platform or frame, 0, is used. All of the platforms or frames are of the construction described. They are each provided in the aforesaid manner with backacting weights E; but their ropes F are fastened to the above-described drum G, as shown. In order to render said connecting-ropes F operative, they are held by means of guide-pulleys f in such positions that they incline to drum G and platform 0 in the directions requisite for correct operation, similar to that before described.

It will be seen that while all the platforms are alike and move outwardly from the center in the same manner, the devices for moving two of the three are combined with the devices by which the first one is moved in a novel manner, so that all of the frames move simultaneously both outward and inward. It is desirable to employ several platforms or frames upon the inclined wall of the hopper and around the center bearing portion, a, of the circular bottom thereof, for by this construction the mass of stone around said center bearing of the circular bottom of said hopper is disturbed at different points simultaneously, and the liability of the stones becoming looked upon one another at any one point, so as to form bridges or arches, is greatly lessened.

In Figs. 4 and 5 are shown modified forms of the agitating sliding platforms or frames 0. (Shown in the other views.) The said platforms or frames in these views present, in their cross-section, the form of an arch and of a gable roof, and the abutments of the arch are in form of narrow bars, as 0. By this construction the platforms or frames offer but slight frictional contact with the bottom of the hopper, and stones falling upon the platforms or frames glide off laterally, and smaller pieces ofstone, passing through the open bottoms of the platforms,can roll down to the receiving feed-openings beneath the arched platforms or frames, while pieces of stone can also pass through the spaces at the inner ends of the platforms or frames. i

The platforms or frames can be provided with strong vertical separated projections or pins n (see Fig. 4) in lieu of the inner end cross-bars and angular or turned-up end portions, 0 c, said pins being upright projections from the lower arched crossbar 0 (shown in Fig. 4) and not united at their upper ends, as in Fig. 5.

What I claim as my invention is 1. The combination, with the crusher having a hopper with inclined wall and a circular bottom with feed-opening, of the platform or frame 0, resting loosely on said inclined wall, and operating mechanical devices, constructed and arranged as described, whereby it can be moved continuously outward while feed is in the hopper and during the crushing operation, substantially as described.

2. The combination, with, the crusher having a hopper with inclined wall and a circular bottom with feed-opening, of the platform or frame 0, resting loosely on said inclined wall, and operating mechanical devices, constructed and arranged as described, whereby it can be moved continuously outward while feed is in the hopper and duringthe crushing operation and then be moved continuously inward to its starting position, substantially as described.

3. The combination, with the crusher having a hopper with inclined wall and a circular bottom with feed-opening, of the platform or frame 0, resting loosely on said inclined wall and provided with a draft-rod, c, and an eye, 0, and mechanical devices, constructed and arranged as described, whereby it can be moved continuously outward while feed is in the hopper and during the crushing operation, then continuously returned to its starting position, substantially as described.

4. The combinatiomwith a circular crusher and a hopper having a plurality of feed-openings, of a plurality of feed-regulating platforms or frames and mechanical devices whereby said frames are connected and simultaneously moved outward continuously while feed is in the hopper during the crushing operation, substantially as and for the purpose described.

5. The combination, with a crusher and a hopper having an inclined wall and feed=opening, of a feed-regulating platform or frame loosely resting on the inclined wall of said hopper, and having the upright portion 0 at its lower end and horizontal portion 0, and mechanical devices whereby said frame is moved outward continuously while feed is in the hopper and during the crushing operation, substantially as described.

6. The combination, with the hopper, of the platform or frame 0, comprising frame portions 0, with upright or hooked portions 0 and arched cross-bars 0, applied loosely on the bottom of the hopper of the stone-crusher and connected with mechanical devices by which it is moved outward continuously while feed is in the hopper and during' the crushing operation, and inward to' its starting position after the contents of the hopper are emptied, substantially as and for the purpose described.

7. The combination, with the hopper of a stone-crusher, of the platform or frame 0, chain E, suitable guide-pulleys, weight E, chain F, drum G, and means for operating said drum, substantially as and for the purpose described.

8. In combination with the hopper of a stone-crusher, the platform or frame 0, chain F, drum G, driving-pulley a, and suitable connections between the driving-pulley a and drum G, gear-wheels g g, pulley g and belt 9 substantially as and for the purpose described.

9. The combination,with the hopper, of the feed-regulating platform resting loosely thereon and having the vertical portion 0 and movable outward from the center to the periphery of the hopper for freeing the stone in the hopper, the stone-crusher, and hopper having a feed-opening, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID MARGHANT.

Witnesses:

JOSEPH DONNERSBERGER, E. J. NELSON. 

